Humerus prosthesis

A humeral prosthesis, solid technology, applied in the direction of bone implants, etc., can solve problems such as humeral prosthesis loosening

Pending Publication Date: 2020-09-01
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing humeral prosthesis is connected to the residual end of the humerus by inserting a part of the humeral prosthesis into the medullary cavity of the bone, and the width of the medullary cavity varies at different positions. After a period of use, the humeral prosthesis is prone to loosening

Method used

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  • Humerus prosthesis
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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] As shown in the drawings, the embodiment of the present invention provides a humeral prosthesis, the humeral prosthesis includes: a main structure 10; Made of shape memory alloy, the tubular structure 20 has an expanded state and a first natural state, the radial dimension of the tubula...

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Abstract

The invention provides a humerus prosthesis. The humerus prosthesis comprises a main body structure and a cylindrical structure, the cylindrical structure is connected with the end of the main body structure, the cylindrical structure is made of a shape memory alloy, the cylindrical structure has an expansion state and a first natural state, the radial size of the cylindrical structure in the expansion state is larger than that of the cylindrical structure in the first natural state, and the cylindrical structure is used for being arranged at the residual end of the humerus in a sleeving mode.By the adoption of the scheme, when the humerus prosthesis is implanted, the cylindrical structure is arranged at the residual end of the humerus in a sleeving mode, so that the cylindrical structureand the humerus are connected in a sleeving mode, compared with an existing mode that a part of the humerus body is inserted into a medullary cavity of the residual end, connection is more stable, and the prosthesis can still be reliably connected after being used for a long time. Moreover, the cylindrical structure is made of the shape memory alloy, and the cylindrical structure can be set to bein an expansion state before connection, so that the cylindrical structure can be conveniently arranged on the residual end in a sleeving manner, then the cylindrical structure is restored to the first natural state, and reliable connection with the residual end is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a humeral prosthesis. Background technique [0002] The humeral shaft is one of the common sites of primary malignant bone and soft tissue tumors, and it is also a predilection site for metastatic cancer, accounting for 5% to 8% of bone metastatic cancer. Tumors of the proximal humerus account for the vast majority of tumors of the humerus, and the incidence of the humeral shaft is relatively rare, but the invasion of the humeral shaft is much larger than that of the proximal humerus. Most patients have severe pain, dysfunction of the shoulder and elbow joints, and low quality of life. In recent decades, limb salvage surgery has made great progress in the surgical treatment of malignant tumors in this area. For limb salvage surgery, achieving a tumor-free margin is a prerequisite and an important factor in avoiding local recurrence. Postoperative function is an issue t...

Claims

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Application Information

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IPC IPC(8): A61F2/28
CPCA61F2/28A61F2002/2853
Inventor 马骏
Owner BEIJING AKEC MEDICAL
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